In recent years, a disease has become popular among women – “mastopexy”. Many friends are very concerned about whether their “breast enlargement” is mild or severe, whether it will become cancerous, and whether they need surgery. So what kind of disease is mastocytosis? Some foreign names such as “fibrocystic mastopathy”, “breast dysplasia” and “breast pain” have been used as the diagnosis for the most common type of patients in clinical practice. In the 1980s, domestic pathologists recommended “mastopexy” as the diagnosis for this category, and it has been used ever since. As we can see, the main pathological changes involved in breast hyperplasia are cysts and clinically heterogeneous changes on examination. We know that the glandular tissue in the breast proliferates and recovers in response to fluctuations in estrogen, which is why the breast mammary tissue is very well developed during adolescence and childbearing years, while in older people it is replaced by fat with atrophy. In some cases, this hyperplasia can cause an imbalance in the breast tissue, which can lead to nodularity on palpation, thickening and swelling of the breast, which can be considered a “structural defect” and not a real “disease”. In 1985, a study published abroad involving more than 10,000 people followed for 17.5 years showed that the cysts, ductal dilatation and adenopathy commonly seen in these patients were rarely cancerous. Therefore, patients with breast enlargement are not cancerous, and most do not require surgery or even a biopsy. However, we can also see another type of “hyperplasia”, which is diagnosed as “atypical hyperplasia” after some patients have undergone puncture or surgery to remove the lesion for pathological examination because a breast tumor was found. This atypical hyperplasia is now a definite precancerous lesion, which means that the risk of cancer is several times higher than in the general population, and therefore cannot be compared to our clinical diagnosis of “mammary hyperplasia”. In conclusion, if we are labeled as having “breast enlargement”, we need to first ask our doctor to confirm whether we have ruled out solid tumors. If, after careful examination and imaging, the doctor finally diagnoses “mastopexy”, then we know in our hearts that it is not really a serious disease.